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how to use “AND”, “OR” for RewriteCond on Apache?
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How to disable the application pool idle time-out in IIS7?
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How to disable editing of elements in combobox for c#?
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Use the ComboStyle property:
comboBox.DropDownStyle = ComboBoxStyle.DropDownList;
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How do you move a commit to the staging area in git?
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Neuron
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answered Aug 27 '11 at 10:52
AbizernAbizern
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Relative frequencies / proportions with dplyr
...()) %>%
mutate(freq = n / sum(n))
# am gear n freq
# 1 0 3 15 0.7894737
# 2 0 4 4 0.2105263
# 3 1 4 8 0.6153846
# 4 1 5 5 0.3846154
From the dplyr vignette:
When you group by multiple variables, each summary peels off one level of the grouping. That makes it ea...
What is the difference between Modal and Push segue in Storyboards?
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LJ WilsonLJ Wilson
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Using ping in c#
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edited Jul 30 '18 at 16:15
answered Aug 3 '12 at 23:08
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Difference between os.getenv and os.environ.get
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One difference observed (Python27):
os.environ raises an exception if the environmental variabl...